mathsA rope AB attached to a small block of neglible dimensions and passes over apulley C so that its free end hangs 1.5 metres above ground. When block rests on the floor. The end A of the rope is moved horizontally in astraight line by a man walking at a uniform velocity V=...
March 21, 2014

ChemistryIn a mixture of liquids,liquid A is steam volatile,and decomposes at its boiling point.explain the method of separating liquid A from the mixture,with physical principles involved.
March 20, 2011

math! please helpLand growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a) we did this question before, lost soil=soil mass 14000kg...
November 12, 2009

MathIm not sure but since 14000 kg/ is the soil that is lost per 10000m^2. Do i multipy this by 3.8% to get how much organic material was there?
November 12, 2009

MathLand growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a) we did this question before, lost soil=soil mass 14000kg...
November 12, 2009

mathTruck transportation has an energy cost of 0.76 kcal kg-1 km-1, and it is about 3700 km from San Francisco to Toronto. If a romaine lettuce grown near SF has a specific energy content of 17.0 kcal (100g)-1 and the diesel-powered truck has a payload of 20,000 lbs, calculate the...
November 12, 2009

10th grade algebraok..so first you want to get rid of the fractions, so what u need to do is find a common number for it.. for 3 and 4 its going to be 12 now multiply everything by 12... what you should end up with is 6b+4B = 120.. now solve! and you should get 10.. ps. the only reason im ...
November 12, 2009

mathLand growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a)Calculate how long it will take to erode the entire Ah ...
November 12, 2009

MathLand growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a)Calculate how long it will take to erode the entire Ah ...
November 12, 2009

the big idea of energyThe Big Idea of Energy is probably what is refered to as the Conservation of Energy which is a rule that states that energy can never be created or destroyed it merely changes forms.
December 5, 2006